the "back" button on the weblogout page

[Gavin Eadie <gavin@xxxxxxxxx>]

After logging out from an application, the option to log out from the 
weblogin service is presented on a screen with "Back" and "Logout" 
buttons.  The "Back" button tries to take the user to the last page 
they visited.

If this return into the application would be to a "deep" page (one 
that might represent a half-way point in a process the user abandoned 
by clicking application logout), things get a little messy.  It's 
nothing that the application cannot cope with by detecting the 
attempt to reuse a terminated, or nonexistent, session and then 
presenting the user with the application's front door, instead of the 
targeted page.

I also see an Apache cosign directive which looks like it might also be useful.

   CosignSiteEntry ... [ the URL to redirect to after login  ]

      If this is set to the URL of the application's front page, will 
the behavior be to bring a user who clicks "Back," as in the above 
scenario, to that front page and obviate the need for the application 
to catch the "missing session" case?


Also, in passing, when the user clicks the weblogin logout, their 
next presented page can be specified by the "?http://..."; which may 
be passed to weblogin on the logout request.  Would it make sense to 
have the target of the "Back" button similarly, optionally 
configurable?